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Environmental Engineering

Environmental Engineering
The design discharge for the combined sewer system shall be taken as

Rainfall + DWF
Rainfall + 2 DWF
Equal to rainfall
Rainfall + 6 DWF

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Environmental Engineering
The maximum efficiency of BOD removal is achieved in

Aerated lagoons
Trickling filters
Oxidation ditch
Oxidation pond

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Environmental Engineering
As compared to rapid sand filters, slow sand filters give (i) Slower filtration rate (ii) Higher filtration rate (iii) Lesser efficiency in removal of bacteria (iv) Higher efficiency in removal of bacteria The correct answer is

(i) and (ii)
(ii) and (iv)
(i) and (iv)
(ii) and (iii)

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Environmental Engineering
The suitable layout of distribution system for a city with roads of rectangular pattern is

Grid iron system
Dead end system
Radial system
Ring system

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Environmental Engineering
Orthotolidine test is used for determination of

Dissolved oxygen
Biochemical oxygen demand
Residual chlorine
Dose of coagulant

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Environmental Engineering
Which of the following compounds is widely used for algae control?

Sodium chloride
Calcium chloride
Copper sulphate
Sodium sulphate

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MORE MCQ ON Environmental Engineering

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